Instruction Manual

GS 461
English
23
N If the engine is down on power,
difficult to start or runs poorly at idle
speed, first check the spark plug.
N Fit a new spark plug after about 100
operating hours – or sooner if the
electrodes are badly eroded. Install
only suppressed spark plugs of the
type approved by STIHL – see
"Specifications".
Remove the spark plug
N Remove coarse dirt from the
machine
N Turn screw plug above the rear
handle in the direction of the arrow
and remove filter cover – screw plug
is secured in the filter cover
N Lift the air baffle (1) up and off
N Unplug spark plug boot (2)
N Unscrew spark plug
Checking the Spark Plug
N Clean dirty spark plug.
N Check electrode gap (A) and
readjust if necessary – see
"Specifications".
N Rectify the problems which have
caused fouling of the spark plug.
Possible causes are:
– Too much oil in fuel mix.
– Dirty air filter.
– Unfavorable running conditions.
WARNING
Arcing may occur if the adapter nut (1) is
loose or missing. Working in an easily
combustible or explosive atmosphere
may cause a fire or an explosion. This
can result result in serious injuries or
damage to property.
N Use resistor type spark plugs with a
properly tightened adapter nut.
Installing the spark plug
N Install in the spark plug and tighten
N Press on the spark plug boot (1)
firmly
N Insert the air baffle (2) from above
N Mount filter cover
Spark Plug
2411BA030 KN
2
2411BA032 KN
1
000BA039 KN
A
1
000BA045 KN
1
2411BA033 KN
2